Question Regarding OpenVPN

Hi Forum.
I have a CCR-1009 which I want to use as VPN server for OpenVPN.
I’ve used this guide for setup https://rbgeek.wordpress.com/2014/09/10/openvpn-server-setup-on-mikrotik-routeros/ - which is actually working.
BUT I have 6 persons who needs this VPN. but having some troubles regarding internl IP.
I have this line for routing when the VPN comes up :

route 192.168.0.0 255.255.255.0 10.0.0.1

Could I set this otherwise - since its only working when I’m the first to connect to the Server.
Since the VPNpools are created as /30 network - I have 6 pools like this VPNpool1 ( 10.0.0.1-10.0.0.2) VPNpool2 (10.0.0.3-10.0.0.4) etc
When I connect as user #1 - I’m getting the IP 10.0.0.2 - as VPN ip - But when I connect as #2 - I’m getting VPN IP 10.0.0.4

How can I set a line which will work on all users without should edit the configuration file each time ?